Drunk and fatigue driving warning device for car drivers

The utility model relates to a drunk and fatigue driving warning device for car drivers, which consists of a pressure sensor, an air-sensitive sensor, an infrared sensor, a relay, a motor, a single-chip microcomputer, two USB (universal serial bus) communication modules, a camera, an image acquisition card, a voice prompter, an embedded system and an external communication module, and is powered by a power source and a UPS (uninterrupted power supply). The drunk and fatigue driving warning device can detect alcohol concentration of exhaled air of a driver to determine whether to start a car or not by integrating sensors and information and image processing technologies and the like, and monitors fatigue status of the driver through expression image of the driver, so that double purposes of preventing drunk driving and warning fatigue driving of the driver are achieved, and personal and driving safety of the driver is effectively guaranteed.